HFCPCI_B1_SSL
Write_hfc(hc, HFCPCI_B1_SSL, tx_slot);
Write_hfc(hc, HFCPCI_B1_SSL, slot);
Write_hfc(hc, HFCPCI_B1_SSL, slot);
Write_hfc(hc, HFCPCI_B1_SSL, 0xC0);
Write_hfc(hc, HFCPCI_B1_SSL, 0x80);